When I did yum install, the process remained, so I just solved it
[[email protected] ~]# cat /etc/redhat-release CentOS Linux release 8.2.2004 (Core)
[[email protected] ~]# yum install bind Wait for the process at pid 5016 to terminate.
“It will never end …”
[[email protected] ~]# ps|grep "5016" 5016 pts/0 00:00:04 yum
“I’m not going. Will you kill me?”
“If you don’t die …”
The return of kill was 0, but it was alive for some reason, so it was killed.